*{
  padding: 0;
  margin: 0;
}
 body{
    overflow-x: hidden;
} 
a{ 
    text-decoration: none;
    font-size: 12px;
}
li{
    list-style: none;
}
.fl{
    float: left;
}
/* 清除浮动 */
.clearfix:after {
    content: '';
    display: block;
    clear: both;
}